cranial nerves

Question 1

olfactory

Answer 1

I
sensory
smell
fibers travel through tiny openings in cribriform plate of ethmoid bone

Question 2

optic

Answer 2

II
sensory
vision
transmit impulses from retina to occipital lobe of cerebrum

Question 3

oculomotor

Answer 3

III
motor
eye movement
innervates extrinsic eye muscles

Question 4

trochlear

Answer 4

IV
motor
eye movement
innervates extrinsic eye muscles

Question 5

trigeminal

Answer 5

V
mixed (both sensory & motor)
face sensation
innervates chewing muscles, mastication

Question 6

abducens

Answer 6

VI
motor
abducts eye
innervates extrinsic eye muscles

Question 7

facial

Answer 7

VII
mixed (both sensory and motor)
taste
innervates muscles of facial expression

Question 8

vestibulocochlear

Answer 8

VIII
sensory
hearing
balance
equilibrium

Question 9

glossopharyngeal

Answer 9

IX
mixed (both sensory and motor)
taste
gag reflex
innervates muscles involved in swallowing

Question 10

vagus

Answer 10

X
mixed (both sensory and motor)
wanders into thorax
parasympathetic control of heart, lungs, & digestive system

Question 11

accessory

Answer 11

XI
motor
shoulder shrug
innervates sternocleidomastoid muscle

Question 12

hypoglossal

Answer 12

XII
motor
speech
swallowing
innervate tongue muscles